My profile is 3xtremeGamerz, I was playing a game and then I went to a different server and my name changed to some serious swearing and slurs. It happened after I relaunched Minecraft. I'm still on my profile but the name is still the same. How do I change it because I'm not gonna play any other servers with that name?
It is not possible to get a username like that. Mojang are trying their best on the censorship of usernames. The most likely answer is that someone did something like
/nick (your username) (the new username) as a troll or something.
I would recommend going into a single player world and typing something in chat. If it is the same then contact Mojang support immideatly and change your password to a really complex one.
EDIT: Contact Mojang support now. This here shows you that someone has changed your name and when. Also when you can next change your name back manually. You have to act now for your security's sake.